graph.dataset.html

java 作图的程序

<b>data</b>
<pre>
  protected double data[]
</pre>
<dl>
  <dd> The array containing the actual data
</dl>
<a name="length"><img src="images/magenta-ball.gif" width=12 height=12 alt=" o "></a>
<b>length</b>
<pre>
  protected int length
</pre>
<dl>
  <dd> The number of data points stored in the data array
</dl>
<a name="xrange"><img src="images/magenta-ball.gif" width=12 height=12 alt=" o "></a>
<b>xrange</b>
<pre>
  protected double xrange
</pre>
<dl>
  <dd> The X range of the clipped data
</dl>
<a name="yrange"><img src="images/magenta-ball.gif" width=12 height=12 alt=" o "></a>
<b>yrange</b>
<pre>
  protected double yrange
</pre>
<dl>
  <dd> The Y range of the clipped data
</dl>
<a name="legend_length"><img src="images/magenta-ball.gif" width=12 height=12 alt=" o "></a>
<b>legend_length</b>
<pre>
  protected int legend_length
</pre>
<dl>
  <dd> The length of the example line in the data legend.
</dl>
<a name="legend_text"><img src="images/magenta-ball.gif" width=12 height=12 alt=" o "></a>
<b>legend_text</b>
<pre>
  protected <a href="graph.TextLine.html#_top_">TextLine</a> legend_text
</pre>
<dl>
  <dd> The legend text
</dl>
<a name="legend_ix"><img src="images/magenta-ball.gif" width=12 height=12 alt=" o "></a>
<b>legend_ix</b>
<pre>
  protected int legend_ix
</pre>
<dl>
  <dd> The X pixel position of the data legend
</dl>
<a name="legend_iy"><img src="images/magenta-ball.gif" width=12 height=12 alt=" o "></a>
<b>legend_iy</b>
<pre>
  protected int legend_iy
</pre>
<dl>
  <dd> The Y pixel position of the data legend
</dl>
<a name="legend_dx"><img src="images/magenta-ball.gif" width=12 height=12 alt=" o "></a>
<b>legend_dx</b>
<pre>
  protected double legend_dx
</pre>
<dl>
  <dd> The X data position of the data legend
</dl>
<a name="legend_dy"><img src="images/magenta-ball.gif" width=12 height=12 alt=" o "></a>
<b>legend_dy</b>
<pre>
  protected double legend_dy
</pre>
<dl>
  <dd> The Y data position of the data legend
</dl>
<a name="increment"><img src="images/magenta-ball.gif" width=12 height=12 alt=" o "></a>
<b>increment</b>
<pre>
  protected int increment
</pre>
<dl>
  <dd> The amount to increment the data array when the append method is being
   used.
</dl>
<a name="stride"><img src="images/magenta-ball.gif" width=12 height=12 alt=" o "></a>
<b>stride</b>
<pre>
  protected int stride
</pre>
<dl>
  <dd> The stride of the data. For data pairs (x,y) the stride is 2
</dl>
<a name="constructors"></a>
<h2>
  <img src="images/constructors.gif" width=231 height=38 alt="Constructors">
</h2>
<a name="DataSet"></a>
<a name="DataSet()"><img src="images/yellow-ball.gif" width=12 height=12 alt=" o "></a>
<b>DataSet</b>
<pre>
  public DataSet()
</pre>
<dl>
  <dd> Instantiate an empty data set.
</dl>
<a name="DataSet(int)"><img src="images/yellow-ball.gif" width=12 height=12 alt=" o "></a>
<b>DataSet</b>
<pre>
  public DataSet(int stride) throws <a href="java.lang.Exception.html#_top_">Exception</a>
</pre>
<dl>
  <dd> Instantiate an empty data set.
 @param stride the stride of the data set. The default stride is 2.
</dl>
<a name="DataSet(double[], int)"><img src="images/yellow-ball.gif" width=12 height=12 alt=" o "></a>
<b>DataSet</b>
<pre>
  public DataSet(double d[],
                 int n) throws <a href="java.lang.Exception.html#_top_">Exception</a>
</pre>
<dl>
  <dd> Instantiate a DataSet with the parsed data. Default stride is 2.
The double array contains the data. The X data is expected in
the even indices, the y data in the odd. The integer n is the
number of data Points. This means that the length of the data
array is 2*n.
  <dl>
    <dt> <b>Parameters:</b>
    <dd> d - Array containing the (x,y) data pairs.
    <dd> n - Number of (x,y) data pairs in the array.
    <dt> <b>Throws:</b> <a href="Exception
.html#_top_">Exception
</a>
    <dd> A Generic exception if it fails to load the
           parsed array into the class.
  </dl>
</dl>
<a name="DataSet(double[], int, int)"><img src="images/yellow-ball.gif" width=12 height=12 alt=" o "></a>
<b>DataSet</b>
<pre>
  public DataSet(double d[],
                 int n,
                 int s) throws <a href="java.lang.Exception.html#_top_">Exception</a>
</pre>
<dl>
  <dd> Instantiate a DataSet with the parsed data.
The double array contains the data. The X data is expected to be in
indices i*stride where i=0,1,... The Y data is expected to be found
in indices i*stride+1 where i=0,1,2...
The integer n is the
number of data Points. This means that the length of the data
array is 2*stride.
  <dl>
    <dt> <b>Parameters:</b>
    <dd> d - Array containing the (x,y) data pairs.
    <dd> n - Number of (x,y) data pairs in the array.
    <dd> s - The stride of the data.
    <dt> <b>Throws:</b> <a href="Exception
.html#_top_">Exception
</a>
    <dd> A Generic exception if it fails to load the
           parsed array into the class.
  </dl>
</dl>
<a name="methods"></a>
<h2>
  <img src="images/methods.gif" width=151 height=38 alt="Methods">
</h2>
<a name="append(double[], int)"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a>
<a name="append"><b>append</b></a>
<pre>
  public void append(double d[],
                     int n) throws <a href="java.lang.Exception.html#_top_">Exception</a>
</pre>
<dl>
  <dd> Append data to the data set.
  <dl>
    <dt> <b>Parameters:</b>
    <dd> d - Array containing (x,y) pairs to append
    <dd> n - Number of (x,y) data pairs in the array.
    <dt> <b>Throws:</b> <a href="Exception
.html#_top_">Exception
</a>
    <dd> A generic exception if it fails to load the
           parsed array into the class.
  </dl>
</dl>
<a name="delete(int, int)"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a>
<a name="delete"><b>delete</b></a>
<pre>
  public void delete(int start,
                     int end)
</pre>
<dl>
  <dd> Delete data from the data set (start and end are inclusive).
The first (x,y) pair in the data set start at index 0.
  <dl>
    <dt> <b>Parameters:</b>
    <dd> start - The start (x,y) pair index.
    <dd> end - The end (x,y) pair index.
  </dl>
</dl>
<a name="deleteData()"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a>
<a name="deleteData"><b>deleteData</b></a>
<pre>
  public void deleteData()
</pre>
<dl>
  <dd> Delete all the data from the data set.
</dl>
<a name="draw_data(java.awt.Graphics, java.awt.Rectangle)"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a>
<a name="draw_data"><b>draw_data</b></a>
<pre>
  public void draw_data(<a href="java.awt.Graphics.html#_top_">Graphics</a> g,
                        <a href="java.awt.Rectangle.html#_top_">Rectangle</a> bounds)
</pre>
<dl>
  <dd> Draw the straight line segments and/or the markers at the
data points.
If this data has been attached to an Axis then scale the data
based on the axis maximum/minimum otherwise scale using
the data's maximum/minimum
  <dl>
    <dt> <b>Parameters:</b>
    <dd> g - Graphics state
    <dd> bounds - The data window to draw into
  </dl>
</dl>
<a name="getXmax()"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a>
<a name="getXmax"><b>getXmax</b></a>
<pre>
  public double getXmax()
</pre>
<dl>
  <dd> return the data X maximum.
</dl>
<a name="getXmin()"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a>
<a name="getXmin"><b>getXmin</b></a>
<pre>
  public double getXmin()
</pre>
<dl>
  <dd> return the data X minimum.
</dl>
<a name="getYmax()"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a>
<a name="getYmax"><b>getYmax</b></a>
<pre>
  public double getYmax()
</pre>
<dl>
  <dd> return the data Y maximum.
</dl>
<a name="getYmin()"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a>
<a name="getYmin"><b>getYmin</b></a>
<pre>
  public double getYmin()
</pre>
<dl>
  <dd> return the data Y minimum.
</dl>
<a name="legend(int, int, java.lang.String)"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a>
<a name="legend"><b>legend</b></a>
<pre>
  public void legend(int x,
                     int y,
                     <a href="java.lang.String.html#_top_">String</a> text)
</pre>
<dl>
  <dd> Define a data legend in the graph window
  <dl>
    <dt> <b>Parameters:</b>
    <dd> x - pixel position of the legend.
    <dd> y - pixel position of the legend.
    <dd> text - text to display in the legend
  </dl>
</dl>
<a name="legend(double, double, java.lang.String)"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a>
<a name="legend"><b>legend</b></a>
<pre>
  public void legend(double x,
                     double y,
                     <a href="java.lang.String.html#_top_">String</a> text)
</pre>
<dl>
  <dd> Define a data legend in the graph window
  <dl>
    <dt> <b>Parameters:</b>
    <dd> x - data position of the legend.
    <dd> y - data position of the legend.
    <dd> text - text to display in the legend
  </dl>
</dl>
<a name="legendFont(java.awt.Font)"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a>
<a name="legendFont"><b>legendFont</b></a>
<pre>
  public void legendFont(<a href="java.awt.Font.html#_top_">Font</a> f)
</pre>
<dl>
  <dd> Set the font to be used in the legend
  <dl>
    <dt> <b>Parameters:</b>
    <dd> f - font
  </dl>
</dl>
<a name="legendColor(java.awt.Color)"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a>
<a name="legendColor"><b>legendColor</b></a>
<pre>
  public void legendColor(<a href="java.awt.Color.html#_top_">Color</a> c)
</pre>
<dl>
  <dd> Set the color for the legend text
  <dl>
    <dt> <b>Parameters:</b>
    <dd> c - color
  </dl>
</dl>
<a name="dataPoints()"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a>
<a name="dataPoints"><b>dataPoints</b></a>
<pre>
  public int dataPoints()
</pre>
<dl>
  <dd> Return the number of data points in the DataSet
  <dl>
    <dt> <b>Returns:</b>
    <dd> number of (x,y0 points.
  </dl>
</dl>
<a name="getPoint(int)"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a>
<a name="getPoint"><b>getPoint</b></a>
<pre>
  public double[] getPoint(int index)
</pre>
<dl>
  <dd> get the data point at the parsed index. The first (x,y) pair
is at index 0.
  <dl>
    <dt> <b>Parameters:</b>
    <dd> index - Data point index
    <dt> <b>Returns:</b>
    <dd> array containing the (x,y) pair.
  </dl>
</dl>
<a name="getClosestPoint(double, double)"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a>
<a name="getClosestPoint"><b>getClosestPoint</b></a>
<pre>
  public double[] getClosestPoint(double x,
                                  double y)
</pre>
<dl>
  <dd> Return the data point that is closest to the parsed (x,y) position
  <dl>
    <dt> <b>Parameters:</b>
    <dd> y - (x,y) position in data space.
    <dt> <b>Returns:</b>
    <dd> array containing the closest data point.
  </dl>
</dl>
<a name="draw_lines(java.awt.Graphics, java.awt.Rectangle)"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a>
<a name="draw_lines"><b>draw_lines</b></a>
<pre>
  protected void draw_lines(<a href="java.awt.Graphics.html#_top_">Graphics</a> g,
                            <a href="java.awt.Rectangle.html#_top_">Rectangle</a> w)
</pre>
<dl>
  <dd> Draw into the data window the straight line segments joining the
data points.
  <dl>
    <dt> <b>Parameters:</b>
    <dd> g - Graphics context
    <dd> w - Data window
  </dl>
</dl>
<a name="inside(double, double)"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a>
<a name="inside"><b>inside</b></a>
<pre>
  protected boolean inside(double x,
                           double y)
</pre>
<dl>
  <dd> Return true if the point (x,y) is inside the allowed data range.
</dl>
<a name="draw_markers(java.awt.Graphics, java.awt.Rectangle)"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a>
<a name="draw_markers"><b>draw_markers</b></a>
<pre>
  protected void draw_markers(<a href="java.awt.Graphics.html#_top_">Graphics</a> g,
                              <a href="java.awt.Rectangle.html#_top_">Rectangle</a> w)
</pre>
<dl>
  <dd> Draw the markers.
 Only markers inside the specified range will be drawn. Also markers
 close the edge of the clipping region will be clipped.
  <dl>
    <dt> <b>Parameters:</b>
    <dd> g - Graphics context
    <dd> w - data window
    <dt> <b>See Also:</b>
    <dd> <a href="graph.Markers.html#_top_">Markers</a>
  </dl>
</dl>
<a name="draw_legend(java.awt.Graphics, java.awt.Rectangle)"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a>
<a name="draw_legend"><b>draw_legend</b></a>
<pre>
  protected void draw_legend(<a href="java.awt.Graphics.html#_top_">Graphics</a> g,
                             <a href="java.awt.Rectangle.html#_top_">Rectangle</a> w)
</pre>
<dl>
  <dd> Draw a legend for this data set
  <dl>
    <dt> <b>Parameters:</b>
    <dd> g - Graphics context
    <dd> w - Data Window
  </dl>
</dl>
<a name="range(int)"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a>
<a name="range"><b>range</b></a>
<pre>
  protected void range(int stride)
</pre>
<dl>
  <dd> Calculate the range of the data. This modifies dxmin,dxmax,dymin,dymax
and xmin,xmax,ymin,ymax
</dl>
<hr>
<pre>
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